A senior detective has told a murder trial the scene of a teenager's fatal stabbing was the "most distressing incident” he had ever attended in 17 years of service.

A senior detective has told a murder trial the scene of a teenager's fatal stabbing was the "most distressing incident” he had ever attended in 17 years of service.

DS Stuart Wales told Swansea Crown Court he attended at Ninian Road in Cardiff’s Roath suburb within minutes of receiving a report of a possible stabbing.

“I could tell by the nature of the airway transmission that it was quite serious,” he said.

Referring to the scene at the home where Aamir Siddiqi was brutally stabbed in April 2010, DS Wales said: “I have 17 years police service and there is no doubt about it, it was the most distressing incident I have ever had to attend.”

“I have a lad of a similar age and it was quite close to home,” he added.

DS Wales also said the stabbing was “without doubt” the most difficult incident he had had to make operational police decisions in.

He said before he entered the house he said heard screaming and crying coming from inside.

“I had never heard anything like it, it was terrible screaming,” he said.

DS Wales also recalled seeing the woman he now knows to be Aamir’s mum, Parveen Ahmad, at the window.

“The net curtain of the window flung back and I did not expect it to. I looked to the right and I saw the face of Aamir’s mum, she looked absolutely traumatised. It is still an image quite clear in my mind.”

DS Wales also described Aamir’s father as appearing “silently traumatised”.

Swansea Crown Court has previously heard that Aamir’s parents both sustained injuries as they tried to stop their son from being attacked.

DS Wales confirmed that once they realised the parents had sustained injuries a decision was taken to remove Mrs Ahmad from the house in order that she get treatment.

“Parveen was quite reluctant to leave the house. She could see what was going on in the hallway [where attempts were being made to resuscitate Aamir] and for obvious reasons she did not want to leave.”

DS Wales said he was told that Mrs Ahmad’s condition was possibly deteriorating and the decision was made to get her to an ambulance.

He also described how he came across a passer-by, Ian Nurse, inside the house who had tried to help at the scene after being told of screams coming from the house.

Earlier in the week the jury had heard evidence from Mr Nurse.

DS Wales said he “taken aback” when he pushed open a door in the house and saw Mr Nurse sat there.

“He was clearly disorientated and shocked,” said DS Wales.

He added that he was surprised to see him there.

“It was clearly a Muslim house and I did not expect to find him there,” said DS Wales.

He added that when he asked Mr Nurse who he was, he said: “I was just passing, I tried to help.”

The court heard that on April 16, 2010, five days after Aamir’s death, Ben Hope was arrested on suspicion of murder.

Jason Richards, 38, and Mr Hope, 39, are on trial accused of his murder and the attempted murder of his parents.

They both deny all the charges against them.

Under cross examination by John Charles Rees QC, defending for Mr Richards, it was confirmed that a crime scene log, which records who goes in and out of a scene, could not be located.

“You would expect it to be retained,” said Mr Rees, to which DS Wales agreed he would.

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